Libgdx decalbatch particles alpha

[klaszlo8207]

How can I use this library to create some 3d decal and change the alphas invidually?
Can you show some code for this?

Thanks,
Leslie

[cypherdare]

You can look at the parts of FlexBatchTest pertaining to Quad3D for an example of usage.

Your question makes me realize I didn't include getColor(), getAlpha(), or setAlpha() methods on the Quad class. So until I add that, you'll need to subclass Quad3D. The RGBA color is stored in a protected 32 bit float. You can add a TMP static final Color object for extracting the values. Then you can add methods like this:

public Color getColor (){
    Color.abgr8888ToColor(TMP, color);
    return TMP;
}

public float getAlpha (){
    return getColor().a;
}

public void setAlpha (float alpha){
    Color.abgr8888ToColor(TMP, color);
    TMP.a = alpha;
    color(TMP);
}

Or if you're not modifying RGB of your decals, you can simply set alpha on a Quad3D like this:

quad3d.color(1, 1, 1, alpha);